Push type separation device of clutch

Abstract

The invention discloses a push type separation device of a clutch, relates to the technical field of clutches, and solves the problems that the workload of a driver is increased due to the fact that the free stroke of a pedal needs to be manually adjusted after a clutch friction plate of an existing clutch separation device is abraded, and the clutch is extremely easy to be seriously ablated if the adjustment is not timely. A structural form of two hydraulic pistons and two rotation stopping pins is adopted, a movable piston is hydraulically driven to move along a guide shaft pipe and is limited to rotate around the axis of a piston seat, the movable piston and the piston seat form an air cylinder mechanism, the hydraulic pistons are installed in an oil cavity in a sliding mode, and the hydraulic pistons and the oil cavity in the piston seat form an oil cylinder mechanism. According to the separation device of the clutch, in the separation control process of the clutch, a separation shifting fork, a shifting fork sleeve, a separation lever and a push rod do not need to be arranged, so that easily-worn components are reduced, the working stability is improved, and the separation device has the advantages of being simple in structure and low in manufacturing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of clutches, and particularly to a push - type separation device for a clutch. Background Art

[0002] At present, automotive clutch control devices include two forms: mechanical operation and hydraulic gas - assisted operation. Both of the above - mentioned clutch control devices include a release fork, a fork sleeve, and a bearing seat, and both have problems such as complex structure, unstable operation, and the need for manual adjustment of the pedal free travel after the clutch friction plate wears. If the adjustment is not timely, it will cause serious ablation of the clutch. Moreover, regardless of which of the above - mentioned separation devices, they all require a release fork, a release bearing seat, a push rod, and an adjustment pull rod. Due to the large elastic force of the compression spring of the automotive clutch, the release fork, fork sleeve, bearing seat, push rod, and adjustment pull rod of the clutch are extremely prone to wear, resulting in faults such as incomplete clutch separation and unstable engagement.

[0003] In summary, the existing clutch separation device requires manual adjustment of the pedal free travel after the clutch friction plate wears, increasing the workload of the driver. If the adjustment is not timely, it is extremely likely to cause serious ablation of the clutch. Summary of the Invention

[0004] Aiming at the problem that the existing clutch separation device requires manual adjustment of the pedal free travel after the clutch friction plate wears, increasing the workload of the driver, and if the adjustment is not timely, it is extremely likely to cause serious ablation of the clutch, the purpose of the present invention is to provide a push - type separation device for a clutch.

[0005] In order to achieve the above - mentioned purpose, the technical solution adopted by the present invention is as follows:

[0006] A push - type separation device for a clutch, including: a piston seat 1, a moving piston 2, and a hydraulic piston 3. The moving piston 2 is slidably installed on the guide shaft tube 22 of the piston seat 1. The moving piston 2 and the piston seat 1 enclose an air chamber 20. At least one oil chamber 19 is opened on the piston seat 1. Each hydraulic piston 3 is slidably installed in an oil chamber 19. The front ends of a plurality of hydraulic pistons 3 are all located in the air chamber 20 and abut against the inner wall of the moving piston 2.

[0007] The moving piston 2 is provided with an air path 5 and an oil path 6. The outlet of the air path 5 is communicated with the air chamber 20. Each outlet of the oil path 6 is communicated with an oil chamber 19 and is located at the rear end of the hydraulic piston 3 in the oil chamber 19.

[0008] In the above - mentioned push - type separation device for a clutch, at least one anti - rotation chamber 21 is opened on the piston seat 1, and a plurality of anti - rotation pins 4 are provided on the moving piston 2. Each anti - rotation pin 4 is slidably installed in an anti - rotation chamber 21.

[0009] The push - type separation device of the above - mentioned clutch, wherein the axes of the plurality of hydraulic pistons 3 are all parallel to the axis of the guide shaft tube 22, the axes of the plurality of anti - rotation pins 4 are all parallel to the axis of the guide shaft tube 22, the plurality of hydraulic pistons 3 are arranged at equal circumferential intervals around the axis of the guide shaft tube 22, and any one anti - rotation pin 4 is located between two adjacent hydraulic pistons 3.

[0010] The push - type separation device of the above - mentioned clutch, further comprising: a second wear - resistant ring 10 and a second air seal 17. The second wear - resistant ring 10 is installed on the inner wall of the rear end housing of the moving piston 2, the second air seal 17 is installed on the outer wall of the piston seat 1, both the second wear - resistant ring 10 and the second air seal 17 are located between the moving piston 2 and the piston seat 1, the second air seal 17 is arranged on the front side of the second wear - resistant ring 10, and the second air seal 17 is used for sealing between the moving piston 2 and the piston seat 1.

[0011] The push - type separation device of the above - mentioned clutch, further comprising: a third wear - resistant ring 11 and a second snap ring 15. The third wear - resistant ring 11 is installed on the inner wall of the front end housing of the moving piston 2, and the second snap ring 15 is used for limiting the third wear - resistant ring 11.

[0012] The push - type separation device of the above - mentioned clutch, further comprising: a release bearing 8 and a first snap ring 14. The release bearing 8 is installed on the outer wall of the front end housing of the moving piston 2, and the first snap ring 14 is used for limiting the release bearing 8.

[0013] The push - type separation device of the above - mentioned clutch, further comprising: a first air seal 13. The first air seal 13 is installed on the inner wall of the front end housing of the moving piston 2, the first air seal 13 is arranged on the rear side of the third wear - resistant ring 11 and is located between the moving piston 2 and the guide shaft tube 22, and the first air seal 13 is used for sealing between the moving piston 2 and the piston seat 1.

[0014] The push - type separation device of the above - mentioned clutch, further comprising: an oil seal 12 and a fourth wear - resistant ring 16. The rear outer wall of each hydraulic piston 3 is installed with an oil seal 12 and a fourth wear - resistant ring 16. The oil seal 12 and the fourth wear - resistant ring 16 are both arranged between the hydraulic piston 3 and the oil cavity 19. The oil seal 12 is located on the rear side of the fourth wear - resistant ring 16, and the inner wall of the hydraulic piston 3 and the oil cavity 19 is sealed by the oil seal 12;

[0015] Further comprising: a first wear - resistant ring 9. Each first wear - resistant ring 9 is installed on the front inner wall of an oil cavity 19, and the first wear - resistant ring 9 is arranged between the hydraulic piston 3 and the inner wall of the oil cavity 19.

[0016] The push - type separation device of the clutch described above further includes: a dust cover 7, which is sleeved on the outer periphery of the piston seat 1. The front end of the dust cover 7 is connected to the outer wall of the rear end of the moving piston 2, and the rear end of the dust cover 7 is connected to the outer wall of the piston seat 1.

[0017] The push - type separation device of the clutch described above, wherein the inlet of the air circuit 5 is communicated with an external air circuit, and the inlet of the oil circuit 6 is communicated with an external oil circuit.

[0018] Due to the adoption of the above - mentioned technology, the positive effects of the present invention compared with the prior art are as follows:

[0019] (1) The moving piston of the present invention can slide horizontally and freely along the guide shaft tube. After the clutch friction plate wears, there is no need for manual adjustment of the pedal free travel, reducing the wear caused by the lack of free travel of the clutch, greatly extending the service life of the clutch friction plate, improving driving safety, and reducing the vehicle operation cost.

[0020] (2) There is no direct contact between the moving piston and the guide shaft tube of the present invention. The moving piston is sleeved on the guide shaft tube through a wear - resistant ring, and the outer wall of the guide shaft tube is not worn. At the same time, a rotation - stopping cavity is machined on the piston seat, and the moving piston and the piston seat are positioned in the rotation - stopping cavity through a rotation - stopping pin, ensuring that the moving piston only slides along the length direction of the guide shaft tube, greatly extending the service life of the air seal and the oil seal.

[0021] (3) An oil cavity is formed between the hydraulic piston and the piston seat of the present invention. The magnitude of the oil pressure in the oil cavity allows the driver to perceive the resistance during the clutch separation process through the reaction force of the oil pressure in the clutch master cylinder, and the driver can judge the engagement state of the clutch based on this.

[0022] (4) When the separation device of the clutch of the present invention controls the separation of the clutch, there is no need to set a release fork, fork sleeve, release lever, and push rod, thereby reducing the easily worn components, improving the working stability, and the present invention has the advantages of simple structure and low manufacturing cost. Brief Description of the Drawings

[0023] Figure 1 is a longitudinal sectional structural schematic diagram of a push - type separation device of a clutch according to the present invention.

[0024] Figure 2 is Figure 1 a partial enlarged view of the position of the air circuit and the oil circuit in

[0025] Figure 3 is Figure 1 a partial enlarged view of the position of the release bearing in

[0026] Figure 4It is a schematic cross-sectional view of a push-type separation device of a clutch according to the present invention.

[0027] Figure 5 It is a schematic structural view of a control device.

[0028] In the drawings: 1, piston seat; 2, moving piston; 3, hydraulic piston; 4, anti-rotation pin; 5, gas path; 6, oil path; 7, dust cover; 8, release bearing; 9, first wear-resistant ring; 10, second wear-resistant ring; 11, third wear-resistant ring; 12, oil seal; 13, first air seal; 14, first snap ring; 15, second snap ring; 16, fourth wear-resistant ring; 17, second air seal; 18, fifth wear-resistant ring; 19, oil cavity; 20, gas cavity; 21, anti-rotation cavity; 22, guide shaft tube; 100, end cover; 101, first return spring; 102, intake valve; 103, first air passage; 104, intake valve cavity; 105, annular intake valve seat; 106, second return spring; 107, exhaust passage; 108, relay valve piston; 109, first sealing ring; 110, second air passage; 111, third oil seal; 112, oil passage; 113, relay valve piston cavity. Detailed implementation manners

[0029] The present invention will be further described below in conjunction with the drawings and specific embodiments, but it is not intended to limit the present invention.

[0030] Please refer to Figures 1 to 5 As shown, a push-type separation device of a clutch is shown. Among them, a structural form of two hydraulic pistons 3 and two anti-rotation pins 4 is adopted, which respectively realizes the displacement of the moving piston 2 along the guide shaft tube 22 by hydraulic drive and restricts the rotation of the moving piston 2 around the axis of the piston seat 1, reducing the wear caused by relative rotation between the two while ensuring the stable operation of the moving piston 2.

[0031] Furthermore, in a preferred embodiment, the push-type separation device of the present invention can also adopt a structural form of one or more than three hydraulic pistons 3.

[0032] Furthermore, in a preferred embodiment, the push-type separation device of the present invention can also adopt a structural form of one or more than three anti-rotation pins 4.

[0033] Furthermore, in a preferred embodiment, the rear end of the piston seat 1 is provided with a screw assembly hole, which is convenient for the subsequent assembly of the piston seat 1.

[0034] Furthermore, in a preferred embodiment, the moving piston 2 and the piston seat 1 form a cylinder mechanism, and the moving piston 2 and the piston seat 1 enclose to form a gas cavity 20. By adjusting the pressure in the gas cavity 20, the reciprocating movement of the moving piston 2 on the piston seat 1 can be realized. When the pressure in the gas cavity 20 increases, the moving piston 2 moves forward.

[0035] Furthermore, in a preferred embodiment, the hydraulic piston 3 is slidably mounted within an oil chamber 19. The hydraulic piston 3 and the oil chamber 19 on the piston seat 1 form a cylinder mechanism. By adjusting the pressure within the oil chamber 19, reciprocating movement of the hydraulic piston 3 within the oil chamber 19 can be achieved. When the pressure within the oil chamber 19 increases, the hydraulic piston 3 moves forward and pushes the moving piston 2 forward.

[0036] Furthermore, in a preferred embodiment, by providing a first air seal 13 and a second air seal 17, sealing between the piston seat 1 and the moving piston 2 is achieved, ensuring that when the pressure within the air chamber 20 changes, relative movement between the piston seat 1 and the moving piston 2 can occur stably.

[0037] Furthermore, in a preferred embodiment, by providing an oil seal 12, sealing between the inner wall of the oil chamber 19 and the hydraulic piston 3 is achieved, ensuring that when the pressure within the oil chamber 19 changes, relative movement between the hydraulic piston 3 and the moving piston 2 can occur stably, while preventing the clutch oil within the oil chamber 19 from entering the air chamber 20.

[0038] Furthermore, in a preferred embodiment, by providing a first wear-resistant ring 9, a second wear-resistant ring 10, a third wear-resistant ring 11, a fourth wear-resistant ring 16, and a fifth wear-resistant ring 18, wear between the piston seat 1, the moving piston 2, and the hydraulic piston 3 during the operation of the push-type separation device is effectively reduced, extending the service life of the push-type separation device.

[0039] Furthermore, in a preferred embodiment, the assembly positions of the first snap ring 14 and the second snap ring 15 are as Figure 3 shown. The first snap ring 14 is used to limit the position of the release bearing 8, preventing relative displacement between the release bearing 8 and the moving piston 2 and avoiding affecting the operation of the equipment; the second snap ring 15 is used to limit the position of the third wear-resistant ring 11, preventing relative displacement between the third wear-resistant ring 11 and the moving piston 2 and avoiding affecting the operation of the equipment.

[0040] Furthermore, in a preferred embodiment, a dust cover 7 is disposed around the piston seat 1. The front end of the dust cover 7 is connected to the outer wall of the rear end of the moving piston 2, and the rear end of the dust cover 7 is connected to the outer wall of the piston seat 1. Sealing at the connection between the piston seat 1 and the moving piston 2 is achieved through the dust cover 7. During the reciprocating movement of the moving piston 2, the dust cover 7 prevents foreign objects such as dust from entering the separation cylinder 2 along with the moving piston 2 and affecting the operation of the equipment.

[0041] Furthermore, in a preferred embodiment, an air passage 5 and an oil passage 6 are provided on the piston seat 1. The outlet of the air passage 5 is in communication with the air chamber 20, and each outlet of the oil passage 6 is in communication with an oil chamber 19; the inlet of the air passage 5 is in communication with an external air passage, and the inlet of the oil passage 6 is in communication with an external oil passage. The control device is as Figure 5As shown, the oil passage 6 located at the rear end of the piston seat 1 is of an annular structure and is arranged around its own axis, so that a plurality of oil cavities 19 arranged in a circumferential manner communicate with the oil passage 6;

[0042] When the separating device of the present invention is applied to a vehicle, before the clutch pedal is stepped on, the external oil passage, the oil passage 6 and the plurality of oil cavities 19 are all filled with clutch oil. When the driver steps on the clutch pedal, the pressure in the external oil passage changes, and the clutch oil is pressed into the oil cavity 19 through the oil passage 6, pushing a plurality of hydraulic pistons 3 to move forward, and then pushing the moving piston 2 to move forward; at the same time, the gas in the air storage tank enters the external air passage and enters the air cavity 20 through the air passage 5, pushing the moving piston 2 to move forward. The release bearing 8 is installed on the moving piston 2 and realizes the clutch function with the displacement of the moving piston 2.

[0043] Further, in a preferred embodiment, after the driver releases the clutch pedal, the pressure in the external oil passage returns to the state before stepping on, the air passage communicating with the air storage tank is closed, and under the reaction force of the clutch release lever, the release bearing 8 moves backward. At the same time, the release bearing 8 drives the moving piston 2 to move backward, the moving piston 2 resets and pushes a plurality of hydraulic pistons 3 to reset, the clutch oil in the oil cavity 19 flows back into the external oil passage, and the gas in the air cavity 20 flows back into the external air passage and is discharged.

[0044] Further, in a preferred embodiment, the stroke of the clutch pedal is small. When the driver steps on the clutch pedal, the clutch oil cannot directly push the moving piston 2 to the position required for clutch separation. It is necessary to cooperate with the air storage tank and the external air passage, and the gas in the air cavity 20 is used to push the moving piston 2 to the position required for clutch separation. In the separating device of the present invention, the clutch oil plays a role in controlling the opening and closing of the air storage tank and the external air passage.

[0045] The above are only preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention accordingly.

[0046] On the above basis, the present invention also has the following implementation manners:

[0047] In a further embodiment of the present invention, the control device such as Figure 5As shown in the figure, it includes: a housing, an end cover 100, a first return spring 101, an intake valve 102, and a relay valve piston 108. Inside the housing, there is an annular intake valve seat 105 with a reduced inner diameter. The end cover 100 is installed at the left end of the housing. The annular intake valve seat 105 and the end cover 100 enclose an intake valve chamber 104. The intake valve 102 is slidably installed in the intake valve chamber 104. The first return spring 101 is arranged in the intake valve chamber 104. One end of the first return spring 101 abuts against the end cover 100, and the other end of the first return spring 101 abuts against the intake valve 102. The annular intake valve seat 105 is sealed by the intake valve 102. The housing is provided with a first air passage 103 communicating with the intake valve chamber 104. The air storage cylinder fills the intake valve chamber 104 with gas through the first air passage 103. On the right side of the annular intake valve seat 105, there is a relay valve piston chamber 113. The relay valve piston 108 is slidably installed in the relay valve piston chamber 113. An exhaust passage 107 is provided inside the relay valve piston 108. The second return spring 106 is arranged in the relay valve piston chamber 113. One end of the second return spring 106 abuts against the annular intake valve seat 105, and the other end of the second return spring 106 abuts against the relay valve piston 108. The relay valve piston 108 and the inner wall of the relay valve piston chamber 113 are sealed by a first sealing ring 109. The housing is provided with a second air passage 110 and an oil passage 112. The oil passage 112 is located on the right side of the second air passage 110. The second air passage 110 is communicated with the exhaust passage 107. There is a section of the outer wall of the housing between the second air passage 11 and the oil passage 112. The relay valve piston 108 and this section of the outer wall of the housing are sealed by a third oil seal 111. The right end of the relay valve piston 108 abuts against the inner wall of the right end of the housing. The second air passage 11 communicates with the outside. The oil passage 112 communicates with the oil circuit of the clutch pedal. The housing is also provided with an external air circuit and an external oil circuit. The external oil circuit is communicated with the oil passage 112, and the external air circuit is communicated with the relay valve piston chamber 113.

[0048] When the driver steps on the clutch pedal, the pressure in the oil passage 112 increases, pushing the relay valve piston 108 to move leftward. The second return spring 106 is compressed. After the relay valve piston 108 abuts against the intake valve 102, the exhaust passage 107 is closed. Subsequently, the relay valve piston 108 continues to move leftward, pushing the intake valve 102 to move leftward. The first return spring 101 is compressed. The first air passage 103 and the external air circuit are communicated through the annular intake valve seat 105. The gas in the air storage cylinder enters the separation device through the external air circuit.

[0049] When the driver steps on the clutch pedal, the pressure in the oil passage 112 increases, pushing the relay valve piston 108 to move leftward. The second return spring 106 is compressed. The clutch oil in the oil passage 112 directly enters the separation device through the external oil circuit.

[0050] When the driver releases the clutch pedal, the pressure in the oil passage 112 decreases. The second return spring 106 pushes the relay valve piston 108 to move rightward and reset. The first return spring 101 pushes the intake valve 102 to move rightward and reset. The intake valve 102 abuts against the annular intake valve seat 105, disconnecting the first air passage 103 from the external air circuit. Since the pressure in the relay valve piston chamber 113 decreases, the high-pressure gas in the separating device flows back into the relay valve piston chamber 113 through the external air circuit and is discharged to the outside through the exhaust passage 107 and the second air passage 110.

[0051] When the driver releases the clutch pedal, the pressure in the oil passage 112 decreases. The second return spring 106 pushes the relay valve piston 108 to move rightward until the pressure in the oil passage 112 stops changing. At this time, the clutch oil that enters the separating device by stepping on the clutch pedal flows back into the oil passage 112. The right end of the relay valve piston 108 abuts against the right inner wall of the housing, and the oil passage 112 is disconnected from the external oil circuit.

[0052] Working principle:

[0053] When the clutch pedal is depressed, the high-pressure oil from the master cylinder of the clutch operating mechanism enters the oil chamber 19 through the oil passage 112 and applies pressure on the hydraulic piston 3 and the relay valve piston 108. The relay valve piston 108 moves toward the intake valve 102 side under the drive of the oil pressure until the relay valve piston 108 contacts the intake valve 102, thus closing the exhaust passage 107. Then the relay valve piston 108 continues to move leftward, thereby pushing the intake valve 102 to open. The compressed gas in the air storage tank sequentially passes through the first air passage 103 and the external air circuit and enters the air chamber 20. Under the action of the compressed gas in the air chamber 20, the moving piston 2 is pushed to move forward. The forward movement of the moving piston 2 drives the release bearing 8 on the moving piston 2 to move forward, thereby realizing the separation process of the clutch.

[0054] When the clutch pedal is released, the oil pressure from the master cylinder of the clutch operating mechanism disappears. Under the action of the second return spring 106, the relay valve piston 108 moves rightward. At the same time, the intake valve 102 also moves rightward under the action of the first return spring 101. When the intake valve 102 contacts the annular intake valve seat 105 on the housing, the gas entering from the first air passage 103 is blocked at this time. The compressed gas that has flowed into the air chamber 20 is discharged sequentially through the external air circuit, the exhaust passage 107, and the second air passage 110. Under the reaction force of the clutch release lever, the release bearing 8 moves backward. At the same time, the release bearing 8 drives the moving piston 2 to move backward until the moving piston 2 returns to its initial position, and the clutch is re-engaged to transmit power.

[0055] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that all the equivalent replacements and obvious changes made by using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A push-type release device for a clutch, characterized in that: include: A piston seat (1), a movable piston (2) and a hydraulic piston (3), wherein the movable piston (2) is slidably mounted on a guide shaft tube (22) of the piston seat (1), the movable piston (2) and the piston seat (1) together form an air cavity (20), at least one oil cavity (19) is provided on the piston seat (1), each hydraulic piston (3) is slidably mounted in an oil cavity (19), and the front ends of the plurality of hydraulic pistons (3) are all located in the air cavity (20) and abut against the inner wall of the movable piston (2); The movable piston (2) is provided with an air circuit (5) and an oil circuit (6), the outlet of the air circuit (5) is connected to the air cavity (20); each outlet of the oil circuit (6) is connected to an oil cavity (19) and is located at the rear end of the hydraulic piston (3) in the oil cavity (19).

2. The push-type release device of the clutch according to claim 1, characterized in that: At least one anti-rotation cavity (21) is provided on the piston seat (1), and a plurality of anti-rotation pins (4) are provided on the movable piston (2). Each anti-rotation pin (4) is slidably installed in a anti-rotation cavity (21).

3. The push-type release device of the clutch according to claim 2, characterized in that: The axes of the plurality of hydraulic pistons (3) are parallel to the axis of the guide shaft tube (22), the axes of the plurality of anti-rotation pins (4) are parallel to the axis of the guide shaft tube (22), the plurality of hydraulic pistons (3) are arranged at equal intervals around the circumference of the axis of the guide shaft tube (22), and any anti-rotation pin (4) is located between two adjacent hydraulic pistons (3).

4. The push-type release device of the clutch according to claim 1, characterized in that: Also includes: A second wear-resistant ring (10) and a second gas seal (17), wherein the second wear-resistant ring (10) is mounted on the inner wall of the rear end housing of the movable piston (2), and the second gas seal (17) is mounted on the outer wall of the piston seat (1). The second wear-resistant ring (10) and the second gas seal (17) are both located between the movable piston (2) and the piston seat (1), and the second gas seal (17) is arranged on the front side of the second wear-resistant ring (10). The second gas seal (17) is used to seal between the movable piston (2) and the piston seat (1).

5. The push-type release device of the clutch according to claim 1, characterized in that: Also includes: A third wear-resistant ring (11) and a second retaining spring (15), wherein the third wear-resistant ring (11) is mounted on the inner wall of the front end housing of the moving piston (2), and the second retaining spring (15) is used to limit the position of the third wear-resistant ring (11).

6. The push-type release device of the clutch according to claim 1, characterized in that: Also includes: A release bearing (8) and a first retaining spring (14), wherein the release bearing (8) is mounted on the outer wall of the front end housing of the moving piston (2), and the first retaining spring (14) is used to limit the position of the release bearing (8).

7. The push-type release device of the clutch according to claim 5, characterized in that: Also includes: A first gas seal (13), the first gas seal (13) is installed on the inner wall of the front end housing of the movable piston (2), the first gas seal (13) is arranged on the rear side of the third wear-resistant ring (11) and is located between the movable piston (2) and the guide shaft tube (22), and the first gas seal (13) is used to seal between the movable piston (2) and the piston seat (1).

8. The push-type release device of the clutch according to claim 1, characterized in that: Also includes: An oil seal (12) and a fourth wear-resistant ring (16), the rear end outer wall of each hydraulic piston (3) is equipped with an oil seal (12) and a fourth wear-resistant ring (16), the oil seal (12) and the fourth wear-resistant ring (16) are both arranged between the hydraulic piston (3) and the oil chamber (19), the oil seal (12) is located at the rear side of the fourth wear-resistant ring (16), and the hydraulic piston (3) and the inner wall of the oil chamber (19) are sealed by the oil seal (12); It also includes: a first wear-resistant ring (9), each of which is mounted on the front inner wall of an oil chamber (19), and the first wear-resistant ring (9) is arranged between the hydraulic piston (3) and the inner wall of the oil chamber (19).

9. The push-type release device of the clutch according to claim 1, characterized in that: Also includes: A dust cover (7) is sleeved on the outer periphery of the piston seat (1), the front end of the dust cover (7) is connected to the rear end outer wall of the moving piston (2), and the rear end of the dust cover (7) is connected to the outer wall of the piston seat (1).

10. The push-type release device of the clutch according to claim 1, characterized in that: The inlet of the gas circuit (5) is connected to an external gas circuit, and the inlet of the oil circuit (6) is connected to an external oil circuit.

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